用System.Data.DataTable显示货币

Question

我正在编写一些旧的VB代码，它创建了一个System.Data.DataTable并定义了一些列。它工作得很好，只是我需要一个列来显示为货币，而不仅仅是浮点数。我该怎么做？

Dim myDataTable As New System.Data.DataTable("tblRec")
myDataTable.Columns.Add("RECAMOUNT", System.Type.GetType("System.Double"))

Protected WithEvents DataGridCurrentCRLines As Global.System.Web.UI.WebControls.DataGrid
Session("CRLines") = myDataTable
DataGridCurrentCRLines.DataSource = Session("CRLines")

将行更改为：

myDataTable.Columns.Add("RECAMOUNT", System.Type.GetType("System.Decimal"))

没有区别，我指的是显示1234567.89，而不是1,234,567.89

Answer 1

@Time Schmelter的提示指向正确的方向。

首先将类型更改为string：

myDataTable.Columns.Add("RECAMOUNT", System.Type.GetType("System.String")

然后，我编写了一个帮助器方法来将字符串转换为货币字符串，似乎不能从字符串直接转换为货币字符串，而是必须字符串-> Decimal ->货币字符串。

 Private Function ConvertStringToCurrencyString(ByVal inputString As String) As String

        Dim currencyString As String
        currencyString = ""
        Dim myDecimal As Decimal

        Try

            myDecimal = System.Convert.ToDecimal(inputString)
            currencyString = myDecimal.ToString("C2")

        Catch exception As System.OverflowException
            System.Console.WriteLine("ConvertStringToCurrencyString(): Overflow in string-to-decimal conversion.")
        Catch exception As System.FormatException
            System.Console.WriteLine("ConvertStringToCurrencyString(): The string is not formatted as a decimal.")
        Catch exception As System.ArgumentException
            System.Console.WriteLine("ConvertStringToCurrencyString(): The string is null.")
        End Try

        Return currencyString

    End Function